Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS5778301 A
Publication typeGrant
Application numberUS 08/584,516
Publication dateJul 7, 1998
Filing dateJan 8, 1996
Priority dateMay 20, 1994
Fee statusLapsed
Publication number08584516, 584516, US 5778301 A, US 5778301A, US-A-5778301, US5778301 A, US5778301A
InventorsJoonpyo Hong
Original AssigneeHong; Joonpyo
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cemented carbide
US 5778301 A
Abstract
This invention consists of two parts: "Cemented Carbide with Minimal Amount of Binder Metal", and "Nonmagnetic Cemented Carbide".
The "Cemented Carbide with Minimal Amount of Binder Metal" is for cemented carbide bodies which are made from less than 2% binder metal powder and metal carbide powder. The raw powder is to be prepared following a conventional powder metallurgy method--especially the conventional method of making cemented carbide--milling, forming and sintering.
The "Non-magnetic Cemented Carbide" is cemented carbides which have nickel-tungsten alloy as a binder metal. The process of manufacturing uses said conventional powder metallurgy. The purpose of this invention is to manufacture non-magnetic cemented carbide using more than two metal carbide powders and binder metal. More than one kind of metal carbides form solid solution carbide during the sintering process.
Images(4)
Previous page
Next page
Claims(12)
I claim:
1. A method for making a carbide composite comprising:
i) choosing a binder material from composite powdered metals;
ii) choosing a carbide powder mixture of one or more powders, the said powders being selected from the group consisting of (A) carbide powders of carbide forming metals, (B) solid solution carbide powders of said carbide forming metals, (C) powders of said carbide forming metals and their alloys with an appropriate amount of carbon or carbon producing materials, and (D) mixtures thereof;
iii) mixing and milling said binder material with said carbide powder mixture thereby forming a resultant mixture;
iv) forming a green compact with the resultant mixture;
v) sintering the green compact;
provided that;
a sufficient amount of binder material is added to the carbide powder mixture to facilitate sintering and a significant amount of the binder material evaporates during sintering, thereby resulting in a sintered carbide composite containing less binder material than said resultant mixture, and wherein the amount of binder material present in the sintered carbide composite is less than about 1% by weight of said carbide composite, and the amount of binder material added to said carbide powder mixture is less than about 2% by weight of said resultant mixture.
2. The method according to claim 1, wherein the green compact is sintered at or below atmospheric pressure.
3. The method according to claim 1, wherein the binder material is cobalt.
4. The method according to claim 1 wherein the carbide powder mixture contains two or more carbide forming metals which are in the form of metal carbides, alloys, or metals themselves, provided that any one carbide forming metal does not exceed 98 percent by weight of the total carbide forming metals contained in the carbide powder mixture.
5. The method according to claim 4 wherein the resultant mixture comprises more than 80% by weight tungsten carbide powder, less than 20 percent by weight molybdenum carbide powder, and cobalt powder.
6. The method according to claim 4 wherein the resultant mixture comprises more than 60 percent by weight tungsten carbide powder, less than 10 percent by weight tantalum carbide powder, less than 6 percent by weight titanium carbide powder, less than 6 percent by weight chromium carbide powder, and cobalt powder.
7. Carbide composites made by processes according to claims 1.
8. Carbide composites made by processes according to claims 2.
9. Carbide composites made by processes according to claims 3.
10. Carbide composites made by processes according to claims 4.
11. Carbide composites made by processes according to claims 5.
12. Carbide composites made by processes according to claims 6.
Description
CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation-in-part application of U.S. patent application Ser. No. 08/247,085 now U.S. Pat. No. 5,482,670 filed May 20, 1994, for "Cemented Carbide", the disclosure of which is hereby incorporated by reference.

SUMMARY OF THE INVENTION

This invention consists of two parts. The first part is for "Cemented Carbide with Minimal Amount of Binder Metal", and the second part is for "Nonmagnetic Cemented Carbide".

The invention, "Cemented Carbide with Minimal Amount of Binder Metal", is for making a little or no binder cemented carbide material without using high pressure processes such as hot isostatic pressing (HIP), hot pressing, or rapid omnidirectional compaction (ROC). Cemented carbide is a relatively tough and hard composite material which contains metal which is tough, and carbide which is hard. This cemented carbide is an excellent material and is used for parts needing wear resistance and for tools. In cemented carbide compositions, the metal matrix phase is relatively more vulnerable to abrasive wear and corrosion. If the said cemented carbide part is exposed to abrasive particles or to a chemically corrosive environment, the relatively weak meatal phase is lost, leaving porosities. Later these porosities become the initial points for fracture. For the applications where parts are exposed to corrosive or abrasive environments and the said parts are exposed to moderate stress, non-or little binder cemented carbide would work better. Generally, cemented carbide without binder metal has lots of porosity. The purpose of this invention is to make a good quality cemented carbide with little or no binder, without high pressure treatment such as HIP, ROC or Hot Pressing. The cemented carbide composite of this invention is made from less than 2 percent by weight metal powder; the balance is cemented carbide powders. During the sintering process, especially a vacuum sintering process, a portion of metal binder is lost by evaporation. In the final sintered product, little binder metal is left. Depending on the carbon contents, this residual metal could form inter-metallic composites along with carbon and metal from the carbide. Because of the brittle nature of the inter-metallic composite, generally, it is better to avoid this structure by appropriate carbon amount and composition of the said cemented carbide. Here the metal powder includes cobalt, nickel, iron, molybdenum, chromium powder, and alloy powders containing the above metals, and mixtures of one or more said metals and alloy powders of the said metal. The metal carbide part of this cemented carbide consists of single metal carbides, and solid solution carbides of two or more metal carbides, the said metal carbides include carbides of transition metals. Although cobalt, nickel, iron, or their alloys are generally used as a binder meatal, other metals and alloys also can be used. This said cemented carbide could contain less than 1 percent by weight impurities or other elements could be contained in the said cemented carbide for enhancing mechanical, chemical or physical properties.

The invention, "Non-magnetic Cemented Carbide" is for making non-magnetic cemented carbide body by adding carbide forming metals other than titanium. For certain applications of the cemented carbide, a titanium containing part may not be acceptable. The manufacturers would have more freedom to make non-magnetic cemented carbide if they could use a variety of carbide forming metals, not only titanium metal. The manufacturers would also have a greater freedom in not only the manufacturing process, but also in tailoring better micro-structures of the said cemented carbides for certain applications.

BACKGROUND OF THE INVENTION

The invention, "Cemented Carbide with Minimal Amount of Binder Metal" involves cemented carbide bodies containing little or no metal binder. For certain applications, it is desirable for cemented carbide wear resistant parts and tools to have little binder metal. The earlier U.S. Pat. No. 4,945,073 is for binderless carbide made via a reaction sintering process using tungsten metal and carbon from a polymer, and U.S. Pat. No. 4,923,512 is for a binderless carbide made via a ROC (Rapid Omnidirectional Compaction) Process. This invention is for a product and for a process to make high quality cemented carbide bodies with low or no binder metal, without using high pressure.

Concerning non-magnetic cemented carbide, cemented carbide with nickel binder can be converted to non-magnetic cemented carbide by adjusting the carbon amount: U.S. Pat. No. 3,918,138 is for adjusting the carbon in nickel base cemented carbide by adding titanium metal during the powder milling process. This invention is for adding carbide forming metal other than titanium metal, as well as metal carbides to make high quality products as well as necessary micro-structures.

DETAILED DESCRIPTION OF INVENTION

The microstructure of this said cemented carbide composite with minimal amount of binder metal shows very little binder metal between carbide particles. Although vacuum, hydrogen or pressurized furnace sintering can be used as a sintering process, vacuum sintering is the preferred method. Here, "hydrogen furnace" means a furnace used for sintering in either a hydrogen or an inert atmosphere of about one atmospheric pressure, and "vacuum furnace" means a furnace used for sintering at below one atmospheric pressure of hydrogen or inert gas. During the sintering process, some metal binder is lost by evaporation. The evaporation is heavier during a vacuum sintering process than during an atmospheric pressure sintering process. In this invention, "Cemented Carbide with Minimal Amount of Binder Metal", a small amount of metal is used to help the sintering, and in order to leave less metal in the sintered part, vacuum sintering is the preferred method. The manufacturing method of this invention is well known in the art of powder metallurgy. Raw materials, metal carbide powders and metal powders, are milled using an attrition mill, a ball mill or other conventional method; and then, typically, a 1 to 3 percent by weight organic binder is mixed with the milled powder. Then the powder mixture is introduced into a mold cavity and pressurized to make a so called "green part". Wax is introduced in the powder, either before the milling process or after milling and drying. Wax acts as a lubricant in the molding process and helps maintain the molded shape before sintering. Generally the powder containing the organic binder is pelletized before the molding process to help the following molding process, in which powder is generally gravity fed to the mold. Spray drying or other methods are used as this pelletizing process. This milled and waxed powder is called "grade powder". There are various methods to make green parts such as cold dye pressing, extrusion or slip casting, etc. Sometimes, the parts are formed first, and then machined before sintering. Sometimes parts are pre-sintered at a lower temperature and machined to the appropriate shape, and then the part is fully sintered. Generally sintering is conducted between 1350 degree C. and 1600 degree C. for conventional higher binder cemented carbide which contains between about 4 weight percent and about 25 weight percent binder metal. This said cemented carbide composite with a minimal amount of binder metal needs higher temperature sintering compared with said conventional cemented carbide to enhance the sintering process. The sintering temperature of said cemented carbide composite with minimal amount of binder metal is at least about 1400 degree C. A temperature of from about 1650 degree C. to about 1750 degree C. is a preferred temperature. While the lower temperature limit is, generally, a limiting factor, the upper temperature limit is not so critical. Higher temperature helps reducing defects like voids or porosity. This said cemented carbide composite with minimal amount of binder metal also needs more intense milling compared with said conventional cemented carbide to enhance the sintering process, although it is difficult to define a definite milling time because milling time is dependent on mill, charge size, milling speed, etc. The metal carbide raw materials of this invention, can be mixtures of single metal carbide powders or solid solution carbides of more than one metal carbide. For this invention, cobalt, nickel, iron, or other metals, as well as their alloys and their mixture can be used as raw materials for metal binder.

Detailed descriptions of nickel-tungsten binder carbide is as follows: Nickel metal powder, and metal carbide powders including tungsten carbide, and also more than 7 atomic percent of carbide forming metal powder are used as raw material for the said nickel-tungsten binder non-magnetic cemented carbide. The raw materials are milled and waxed and sintered. Non-magnetic cemented carbide can be made by forming a tungsten-nickel alloy binder while the sintering process. Here, added metal powder includes tungsten, tantalum, molybdenum, chromium, vanadium, niobium, zirconium, hafnium and alloys of said carbide forming metals including titanium. Also alloy powders of nickel with one or more said carbide forming metals can be included as raw material. Here, metal carbide includes tungsten carbide, titanium carbide, tantalum carbide, zirconium carbide, hafnium carbide, niobium carbide and vanadium carbide chromium carbide, and also solid solution carbides of said metal carbide. If exact the amount of carbon is measured for each element of raw material, the exact metal amount can be calculated to make non-magnetic cemented carbide. In reality, the necessary amount should be determined by experiment because the nickel base binder forms complicated alloys including small amounts of all the constituent materials. Also sintering conditions such as using a hydrogen atmosphere or vacuum, and sintering furnace will effect the final carbon amount. The added metals' carbon affinity--how it is a stronger carbide former--also affects the non-magnetic character of final product. Therefore the appropriate amount has to be determined by experiment. Chromium or molybdenum metals or their carbides also can be added to the non-magnetic cemented carbide. The manufacturing method of this said non-magnetic cemented carbide is also the said art of powder metallurgy. Preferably, the nickel-tungsten alloy binder non-magnetic cemented carbides contain tungsten carbide as majority constituent carbide and enough other metal carbides to form said solid solution carbide to help reduce porosity via said solid solution forming process.

EXAMPLE 1

By weight, 92.5% WC, 7% MoC and 0.5% Co powder were milled for 8 hours using an attritor mill and a 1.5% paraffin wax was added, then the powder was pressed in a die to form a piece and sintered at 1700 degree C. for one hour. The sintered piece showed good quality and high hardness; a porosity level of A02B00C00 on the ASTM (American Standard for Testing and Material) standard B276, and a hardness of 95.2 on the Rockwell A scale.

EXAMPLE 2

By weight, 90% WC, 6% MoC, 1% TaC, 0.5% TiC, 1.5% Cr3 C2, 1% Co powder was processed the same way as in EXAMPLE 1. The sintered piece showed high quality and high hardness as EXAMPLE 1: a porosity level of A02B02C00 on the ASTM standard B276, and a hardness of 94.9 on Rockwell A scale.

EXAMPLE 3

By weight, 91.1% WC, 7.5% MoC, 1% Cr3 C2, 0.4% Co powder was processed the same way as in EXAMPLE 1. The sintered piece showed good quality and result: a porosity level of A02B02C00 on the ASTM standard B276, and a hardness of 95.3 on the Rockwell A scale.

EXAMPLE 4

By weight, 96.4% WC, 1% TaC, 0.8% TiC, 1.2% Cr3 C2 and 0.6% Co powder were processed in the same way as in EXAMPLE 1, and same good results were obtained: a porosity level of A02B02C00 on the ASTM standard B276, and a hardness of 95.2 on the Rockwell A scale.

EXAMPLE 5

By weight, 91.8% WC, 8% MoC and 0.2% Co powder were processed the same as EXAMPLE 1, and the same good results were obtained: porosity A02B02C00 on the ASTM B276, and a hardness of 95.0 on the Rockwell A scale.

EXAMPLE 6

By weight, 96.4% WC, 1% TaC, 0.8% TiC, 1.2% Cr3 C2 0.6% Ni were processed the same as EXAMPLE 1, and the specimen had a porosity of A04B02C00 on the ASTM B276, and a hardness of 94.9 on the Rockwell A scale.

EXAMPLE 7

By weight, 92.5% WC, 7% MoC, 0.3% Co and 0.2% Fe powder were processed the same as in EXAMPLE 1, and the specimen had an A02B02C00 porosity on the ASTM B276, and a hardness of 95.0 on the Rockwell A scale.

EXAMPLE 8

By weight, 86.78% tungsten carbide, 2% tantalum carbide, 1% titanium carbide, 0.1% chromium carbide, 0.12% tantalum metal, 10% nickel metal powder were processed the same as EXAMPLE 1. The specimen was nonmagnetic and showed a porosity level of A02B02C00 on the ASTM B276 Standard.

EXAMPLE 9

By weight, 89.88% tungsten carbide, 10% nickel, 0.12% tungsten metal powder were processed the same as EXAMPLE 1. The specimen was non magnetic and had the same good quality as EXAMPLE 8.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1973428 *Nov 8, 1932Sep 11, 1934Firth Sterling Steel CoCemented hard carbide material
US3918138 *Jun 20, 1973Nov 11, 1975Kennametal IncMetallurgical composition embodying hard metal carbides, and method of making
US4945073 *Sep 1, 1989Jul 31, 1990The Dow Chemical CompanyHigh hardness, wear resistant materials
US5273571 *Dec 21, 1992Dec 28, 1993Valenite Inc.Nonmagnetic nickel tungsten cemented carbide compositions and articles made from the same
US5482670 *May 20, 1994Jan 9, 1996Hong; JoonpyoCemented carbide
KR940006288A * Title not available
KR940006289A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6071469 *Jul 23, 1997Jun 6, 2000Sandvik AbSintering method with cooling from sintering temperature to below 1200 C. in a hydrogen and noble gas atmosphere
US6537343Aug 3, 2001Mar 25, 2003Kennametal Inc.Corrosion and wear resistant cemented carbide
US7354548 *Sep 14, 2004Apr 8, 2008Genius Metal, Inc.Fabrication of hardmetals having binders with rhenium or Ni-based superalloy
US7384443Dec 12, 2003Jun 10, 2008Tdy Industries, Inc.Hybrid cemented carbide composites
US7645315Mar 15, 2005Jan 12, 2010Worldwide Strategy Holdings LimitedHigh-performance hardmetal materials
US7687156Aug 18, 2005Mar 30, 2010Tdy Industries, Inc.Composite cutting inserts and methods of making the same
US7703555Aug 30, 2006Apr 27, 2010Baker Hughes IncorporatedDrilling tools having hardfacing with nickel-based matrix materials and hard particles
US7703556Jun 4, 2008Apr 27, 2010Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods
US7775287Dec 12, 2006Aug 17, 2010Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods
US7776256Nov 10, 2005Aug 17, 2010Baker Huges IncorporatedEarth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
US7784567Nov 6, 2006Aug 31, 2010Baker Hughes IncorporatedEarth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits
US7802495Nov 10, 2005Sep 28, 2010Baker Hughes IncorporatedMethods of forming earth-boring rotary drill bits
US7841259Dec 27, 2006Nov 30, 2010Baker Hughes IncorporatedMethods of forming bit bodies
US7846551Mar 16, 2007Dec 7, 2010Tdy Industries, Inc.Composite articles
US7857188Jan 31, 2007Dec 28, 2010Worldwide Strategy Holding LimitedHigh-performance friction stir welding tools
US7913779Sep 29, 2006Mar 29, 2011Baker Hughes IncorporatedEarth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits
US7954569Apr 28, 2005Jun 7, 2011Tdy Industries, Inc.Earth-boring bits
US7997359Sep 27, 2007Aug 16, 2011Baker Hughes IncorporatedAbrasive wear-resistant hardfacing materials, drill bits and drilling tools including abrasive wear-resistant hardfacing materials
US8002052Jun 27, 2007Aug 23, 2011Baker Hughes IncorporatedParticle-matrix composite drill bits with hardfacing
US8007714Feb 20, 2008Aug 30, 2011Tdy Industries, Inc.Earth-boring bits
US8007922Oct 25, 2007Aug 30, 2011Tdy Industries, IncArticles having improved resistance to thermal cracking
US8025112Aug 22, 2008Sep 27, 2011Tdy Industries, Inc.Earth-boring bits and other parts including cemented carbide
US8074750Sep 3, 2010Dec 13, 2011Baker Hughes IncorporatedEarth-boring tools comprising silicon carbide composite materials, and methods of forming same
US8087324Apr 20, 2010Jan 3, 2012Tdy Industries, Inc.Cast cones and other components for earth-boring tools and related methods
US8104550Sep 28, 2007Jan 31, 2012Baker Hughes IncorporatedMethods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures
US8137816Aug 4, 2010Mar 20, 2012Tdy Industries, Inc.Composite articles
US8172914Aug 15, 2008May 8, 2012Baker Hughes IncorporatedInfiltration of hard particles with molten liquid binders including melting point reducing constituents, and methods of casting bodies of earth-boring tools
US8176812Aug 27, 2010May 15, 2012Baker Hughes IncorporatedMethods of forming bodies of earth-boring tools
US8201610Jun 5, 2009Jun 19, 2012Baker Hughes IncorporatedMethods for manufacturing downhole tools and downhole tool parts
US8221517Jun 2, 2009Jul 17, 2012TDY Industries, LLCCemented carbide—metallic alloy composites
US8225886Aug 11, 2011Jul 24, 2012TDY Industries, LLCEarth-boring bits and other parts including cemented carbide
US8230762Feb 7, 2011Jul 31, 2012Baker Hughes IncorporatedMethods of forming earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials
US8261632Jul 9, 2008Sep 11, 2012Baker Hughes IncorporatedMethods of forming earth-boring drill bits
US8272295Dec 7, 2006Sep 25, 2012Baker Hughes IncorporatedDisplacement members and intermediate structures for use in forming at least a portion of bit bodies of earth-boring rotary drill bits
US8272816May 12, 2009Sep 25, 2012TDY Industries, LLCComposite cemented carbide rotary cutting tools and rotary cutting tool blanks
US8308096Jul 14, 2009Nov 13, 2012TDY Industries, LLCReinforced roll and method of making same
US8309018Jun 30, 2010Nov 13, 2012Baker Hughes IncorporatedEarth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
US8312941Apr 20, 2007Nov 20, 2012TDY Industries, LLCModular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
US8317893Jun 10, 2011Nov 27, 2012Baker Hughes IncorporatedDownhole tool parts and compositions thereof
US8318063Oct 24, 2006Nov 27, 2012TDY Industries, LLCInjection molding fabrication method
US8322465Aug 22, 2008Dec 4, 2012TDY Industries, LLCEarth-boring bit parts including hybrid cemented carbides and methods of making the same
US8388723Feb 8, 2010Mar 5, 2013Baker Hughes IncorporatedAbrasive wear-resistant materials, methods for applying such materials to earth-boring tools, and methods of securing a cutting element to an earth-boring tool using such materials
US8403080Dec 1, 2011Mar 26, 2013Baker Hughes IncorporatedEarth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components
US8440314Aug 25, 2009May 14, 2013TDY Industries, LLCCoated cutting tools having a platinum group metal concentration gradient and related processes
US8459380Jun 8, 2012Jun 11, 2013TDY Industries, LLCEarth-boring bits and other parts including cemented carbide
US8464814Jun 10, 2011Jun 18, 2013Baker Hughes IncorporatedSystems for manufacturing downhole tools and downhole tool parts
US8490674May 19, 2011Jul 23, 2013Baker Hughes IncorporatedMethods of forming at least a portion of earth-boring tools
US8512882Feb 19, 2007Aug 20, 2013TDY Industries, LLCCarbide cutting insert
US8637127Jun 27, 2005Jan 28, 2014Kennametal Inc.Composite article with coolant channels and tool fabrication method
US8647561Jul 25, 2008Feb 11, 2014Kennametal Inc.Composite cutting inserts and methods of making the same
US8697258Jul 14, 2011Apr 15, 2014Kennametal Inc.Articles having improved resistance to thermal cracking
US8746373Jun 3, 2009Jun 10, 2014Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods
US8758462Jan 8, 2009Jun 24, 2014Baker Hughes IncorporatedMethods for applying abrasive wear-resistant materials to earth-boring tools and methods for securing cutting elements to earth-boring tools
US8770324Jun 10, 2008Jul 8, 2014Baker Hughes IncorporatedEarth-boring tools including sinterbonded components and partially formed tools configured to be sinterbonded
US8789625Oct 16, 2012Jul 29, 2014Kennametal Inc.Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
US8790439Jul 26, 2012Jul 29, 2014Kennametal Inc.Composite sintered powder metal articles
US8800848Aug 31, 2011Aug 12, 2014Kennametal Inc.Methods of forming wear resistant layers on metallic surfaces
US8808591Oct 1, 2012Aug 19, 2014Kennametal Inc.Coextrusion fabrication method
US8841005Oct 1, 2012Sep 23, 2014Kennametal Inc.Articles having improved resistance to thermal cracking
US8858870Jun 8, 2012Oct 14, 2014Kennametal Inc.Earth-boring bits and other parts including cemented carbide
US8869920Jun 17, 2013Oct 28, 2014Baker Hughes IncorporatedDownhole tools and parts and methods of formation
US8905117May 19, 2011Dec 9, 2014Baker Hughes IncoporatedMethods of forming at least a portion of earth-boring tools, and articles formed by such methods
US8978734May 19, 2011Mar 17, 2015Baker Hughes IncorporatedMethods of forming at least a portion of earth-boring tools, and articles formed by such methods
US9016406Aug 30, 2012Apr 28, 2015Kennametal Inc.Cutting inserts for earth-boring bits
US9163461Jun 5, 2014Oct 20, 2015Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods
US9192989Jul 7, 2014Nov 24, 2015Baker Hughes IncorporatedMethods of forming earth-boring tools including sinterbonded components
US9200485Feb 9, 2011Dec 1, 2015Baker Hughes IncorporatedMethods for applying abrasive wear-resistant materials to a surface of a drill bit
US9266171Oct 8, 2012Feb 23, 2016Kennametal Inc.Grinding roll including wear resistant working surface
US9428822Mar 19, 2013Aug 30, 2016Baker Hughes IncorporatedEarth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components
US9435010Aug 22, 2012Sep 6, 2016Kennametal Inc.Composite cemented carbide rotary cutting tools and rotary cutting tool blanks
US9506297Jun 4, 2014Nov 29, 2016Baker Hughes IncorporatedAbrasive wear-resistant materials and earth-boring tools comprising such materials
US9624417 *Oct 9, 2013Apr 18, 2017Sandvik Intellectual Property AbLow binder, wear resistant hard metal
US9643236Nov 11, 2009May 9, 2017Landis Solutions LlcThread rolling die and method of making same
US9687963Mar 10, 2015Jun 27, 2017Baker Hughes IncorporatedArticles comprising metal, hard material, and an inoculant
US9700991Oct 5, 2015Jul 11, 2017Baker Hughes IncorporatedMethods of forming earth-boring tools including sinterbonded components
US9790745Nov 24, 2014Oct 17, 2017Baker Hughes IncorporatedEarth-boring tools comprising eutectic or near-eutectic compositions
US20040142200 *Sep 2, 2003Jul 22, 2004Metso Powdermet OyMethod for manufacturing erosion-resistant wearing parts and a wearing part
US20050126334 *Dec 12, 2003Jun 16, 2005Mirchandani Prakash K.Hybrid cemented carbide composites
US20050191482 *Mar 15, 2005Sep 1, 2005Liu Shaiw-Rong S.High-performance hardmetal materials
US20050211475 *May 18, 2004Sep 29, 2005Mirchandani Prakash KEarth-boring bits
US20050247491 *Apr 28, 2005Nov 10, 2005Mirchandani Prakash KEarth-boring bits
US20060024140 *Jul 30, 2004Feb 2, 2006Wolff Edward CRemovable tap chasers and tap systems including the same
US20070042217 *Aug 18, 2005Feb 22, 2007Fang X DComposite cutting inserts and methods of making the same
US20070102198 *Nov 10, 2005May 10, 2007Oxford James AEarth-boring rotary drill bits and methods of forming earth-boring rotary drill bits
US20070102199 *Nov 10, 2005May 10, 2007Smith Redd HEarth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
US20070102200 *Sep 29, 2006May 10, 2007Heeman ChoeEarth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits
US20070102202 *Nov 6, 2006May 10, 2007Baker Hughes IncorporatedEarth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits
US20070119276 *Jan 31, 2007May 31, 2007Liu Shaiw-Rong SHigh-Performance Friction Stir Welding Tools
US20080008616 *Sep 14, 2004Jan 10, 2008Genius Metal, Inc., A California CorporationFabrication of hardmetals having binders with rhenium or ni-based superalloy
US20080101977 *Oct 31, 2007May 1, 2008Eason Jimmy WSintered bodies for earth-boring rotary drill bits and methods of forming the same
US20080135304 *Dec 12, 2006Jun 12, 2008Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods
US20080135305 *Dec 7, 2006Jun 12, 2008Baker Hughes IncorporatedDisplacement members and methods of using such displacement members to form bit bodies of earth-boring rotary drill bits
US20080156148 *Dec 27, 2006Jul 3, 2008Baker Hughes IncorporatedMethods and systems for compaction of powders in forming earth-boring tools
US20080202814 *Feb 23, 2007Aug 28, 2008Lyons Nicholas JEarth-boring tools and cutter assemblies having a cutting element co-sintered with a cone structure, methods of using the same
US20080257107 *Apr 8, 2008Oct 23, 2008Genius Metal, Inc.Compositions of Hardmetal Materials with Novel Binders
US20090301787 *Jun 4, 2008Dec 10, 2009Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load bearing joint and tools formed by such methods
US20090301789 *Jun 10, 2008Dec 10, 2009Smith Redd HMethods of forming earth-boring tools including sinterbonded components and tools formed by such methods
US20100180514 *Jan 12, 2010Jul 22, 2010Genius Metal, Inc.High-Performance Hardmetal Materials
US20100193252 *Apr 20, 2010Aug 5, 2010Tdy Industries, Inc.Cast cones and other components for earth-boring tools and related methods
US20100319492 *Aug 27, 2010Dec 23, 2010Baker Hughes IncorporatedMethods of forming bodies of earth-boring tools
US20110094341 *Aug 30, 2010Apr 28, 2011Baker Hughes IncorporatedMethods of forming earth boring rotary drill bits including bit bodies comprising reinforced titanium or titanium based alloy matrix materials
US20110142707 *Feb 7, 2011Jun 16, 2011Baker Hughes IncorporatedMethods of forming earth boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum based alloy matrix materials
US20110186354 *Jun 3, 2009Aug 4, 2011Baker Hughes IncorporatedMethods of attaching a shank to a body of an earth-boring tool including a load bearing joint and tools formed by such methods
US20150259590 *Oct 9, 2013Sep 17, 2015Sandvik Intellectual Property AbLow binder, wear resistant hard metal
Classifications
U.S. Classification419/15, 419/37, 75/236
International ClassificationC22C29/08, C22C1/05
Cooperative ClassificationC22C1/051, B22F2998/00, C22C29/08
European ClassificationC22C29/08, C22C1/05B
Legal Events
DateCodeEventDescription
Jan 4, 2002FPAYFee payment
Year of fee payment: 4
Dec 31, 2005FPAYFee payment
Year of fee payment: 8
Feb 8, 2010REMIMaintenance fee reminder mailed
Jul 7, 2010LAPSLapse for failure to pay maintenance fees
Aug 24, 2010FPExpired due to failure to pay maintenance fee
Effective date: 20100707